Inspection and Verification

WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Always disconnect the battery ground cable at the battery before disconnecting the starter motor battery terminal lead. If a tool is shorted at the starter motor battery terminal, the tool can quickly heat enough to cause a skin burn. Failure to follow this instruction may result in serious personal injury.

NOTE: When working on the starter system, make sure the anti-theft system is operational.

Verify the customer concern by operating the starting system to duplicate the conditions.

Inspect to determine if any of the following mechanical or electrical concerns apply.

VISUAL INSPECTION CHART

Mechanical	Electrical
Starter motor Starter motor bolts Flexplate Flywheel	Battery Battery junction box (BJB) fuses: 11 (30A) 125A Smart junction box (SJB) fuse 27 (20A) Wiring harness Starter relay Anti-theft system Loose or corroded connections

If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

NOTE: Make sure to use the latest scan tool software release.

If the cause is not visually evident, connect the scan tool to the data link connector (DLC).

NOTE: The vehicle communication module (VCM) LED prove out confirms power and ground from the DLC are provided to the VCM.

If the scan tool does not communicate with the VCM:
- check the VCM connection to the vehicle.
- check the scan tool connection to the VCM.
- refer to MODULE COMMUNICATIONS NETWORK article, No Power To The Scan Tool, to diagnose no communication with the scan tool.
If the scan tool does not communicate with the vehicle:
- verify the ignition key is in the ON position.
- verify the scan tool operation with a known good vehicle.
- refer to MODULE COMMUNICATIONS NETWORK article to diagnose no response from the PCM.
Carry out the network test.
- If the scan tool responds with no communication for one or more modules, refer to MODULE COMMUNICATIONS NETWORK article.
- If the network test passes, retrieve and record continuous memory diagnostic trouble codes (DTCs).
Clear the continuous DTCs and carry out the self-test diagnostics for the PCM.
If the DTCs retrieved are related to the concern, go to Powertrain Control Module (PCM) - DTC Chart or the Passive Anti-Theft System (PATS) - DTC Chart. For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES article.
If no DTCs related to the concern are retrieved, go to Symptom Chart .

POWERTRAIN CONTROL MODULE (PCM) - DTC CHART

DTC	Description	Source	Action
P0512	Starter Request Circuit - Circuit has Power With the Ignition in the OFF Position	PCM	Carry out the Ignition Switch Component Test. Refer to appropriate COMPONENT TESTING article. If necessary, INSTALL a new ignition switch. If the ignition switch passed the component test, REPAIR circuit CDC35 (BU/WH) for a short to power.
P1702	TR Sensor Circuit Intermittent	PCM	Refer to the appropriate Automatic Transmission article for the procedure.
P1705	Transmission Range (TR) Not in PARK	PCM	Refer to the appropriate Automatic Transmission article for the procedure.
P0707	TR Out of Range. Shorted Circuit or Sensor	PCM	Refer to the appropriate Automatic Transmission article for the procedure.
P0708	TR Out of Range. Open Circuit or Sensor	PCM	Refer to the appropriate Automatic Transmission article for the procedure.

PASSIVE ANTI-THEFT SYSTEM (PATS) - DTC CHART

DTC	Description	Source	Action
B1213	Anti-Theft Number of Programmed Keys is Below Minimum	PCM	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B1232	Transceiver Module Antenna Failure Memory Failure in the PCM	PCM	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B1342	Electronic Control Unit (ECU) is Defective	PCM	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a PCM. REFER to ELECTRONIC ENGINE CONTROLS - 2.3L article, ELECTRONIC ENGINE CONTROLS - 3.0L (4V) article or ELECTRONIC ENGINE CONTROLS - HYBRID article. CLEAR the DTCs. REPEAT the self-test.
B1600	Passive Anti-Theft System (PATS) Key Transponder is Not Received	PCM	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B1601	PATS Received Incorrect Key-Code From Key Transponder	PCM	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B1602	PATS Received Invalid Format of Key-Code From Key Transponder	PCM	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B1681	PATS Transceiver Module Signal is Not Received	PCM	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B2103	Antenna Not Connected	PCM	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B2431	Key Program Failure (Defective Key or Transceiver)	PCM	VERIFY if the correct PATS key is being used. If the PATS key is defective, USE a new key for programming.